Several contacts with the seller through Amazon for defective part. Finally after 3 weeks of emails exchanged well received poèce received. Good reactivity seller By cons On the reel, the assembly instructions are incomprehensible and for 4m wide swimming pool (standard) I still do not understand how to adjust the aluminum tubes to the correct width. Should we cut but this is not mentioned in the manual ... In short winder not always fit after 2 weeks I'll turn to the vendor for clarification. I am surprised at the previous comments that speaks of a mounting "easy"